JP3059863B2 - Air filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter, and more particularly to a structure of an air filter used in a home air conditioner.

[0002]

2. Description of the Related Art In general, a home air conditioner (small air conditioner) is provided with an air filter for purifying air to be sucked in. Has been adopted.

A conventional air filter of this kind is, for example,
As disclosed in JP-A-3-113213, the pre-filter is disposed between the pre-filter disposed at the air inlet and the heat exchanger.

As shown in FIG. 4, the conventional air filter has an upper frame 101 and a lower frame 103, and a filter member 105 is sandwiched between the upper and lower frames 101 and 103. After being assembled, the air filter is attached so that both ends of the frame are fitted into the fitting portions of the indoor unit.

[0005]

However, in the conventional configuration, since the filter member 105 is interposed between the upper frame 101 and the lower frame 103, for example, as shown in FIG. When an impact is applied, the honeycomb-shaped charging filter may be deformed, and the filter member 105 may be deformed.
However, there is a problem that the gap is formed as shown in the drawing and the portion is damaged in appearance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air filter which solves the above-mentioned problems of the prior art and which does not displace the filter member inside the frame even when an impact is applied. is there.

[0007]

In order to achieve the above object, the present invention is provided between an air conditioner pre-filter and a heat exchanger, comprising an upper frame and a lower frame. Between the deodorizing filter and the honeycomb strip charging filter
It across the filter member configured Te Align to both ends inner surface of the upper frame and / or the lower frame, the both end portions of the filter member
An air filter , wherein a rib for biting and holding the filter member is provided.

[0008]

According to the present invention, since the ribs are provided on both inner surfaces of the upper frame and / or the lower frame, when the filter member is sandwiched between the upper frame and the lower frame, both ends of the filter member are strongly pressed. As a result, even if an impact is applied to the frame body, the filter member does not shift inside the frame body.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 3 denotes an air conditioner, which is a so-called home air conditioner.
As an indoor unit connected to the outdoor unit, it is attached to an indoor wall. The air conditioner 3 has a case 4, and a front cover 11 of the case 4 has an air inlet 1.
2 are formed, and a blow-out port 15 is formed underneath.

A pre-filter 13 is mounted inside the air suction port 12 so as to remove relatively large dust and dirt from the sucked air. The pre-filter 13 is formed linearly at a position corresponding to the lower portion 5b of the heat exchanger, but is formed curved at a position corresponding to the upper portion 5a of the heat exchanger so as to correspond to the inclination of the heat exchanger. Have been.

Thus, according to this embodiment, the filter 17 is provided between the pre-filter 13 and the heat exchanger 5.

This filter 17 is, as shown in FIG.
The frame 19 includes an upper frame 21 and a lower frame 23, and a filter member 31 is sandwiched between the upper frame 21 and the lower frame 23. This filter member 31
The deodorizing filter 27 and the honeycomb-shaped charging filter 29 are overlapped.

The deodorizing filter 27 is obtained by attaching granular activated carbon to a reticulated urethane foam, and the charging filter 29 is stacked on the deodorizing filter 27.
The charging filter 29 is made of a nonwoven fabric made of polypropylene in which a charge is applied in the state of a sheet, and the sheet is formed into a fibrous shape. Are provided with a large number of small holes.

Further, inner surfaces of both ends of the upper frame 21 and the lower frame 23,
Further, a plurality of ribs 33 projecting toward the filter member 31 are provided on the inner surface of the central portion.

According to this, when the filter member 31 is sandwiched between the upper frame 21 and the lower frame 23, the tip of the rib 33 strongly presses the filter member 31, so that the upper frame 21 and the lower frame 2 are pressed.
3, the filter member 31 is firmly fixed.

The ribs 33 are integrally formed when manufacturing the upper frame 21 and the lower frame 23 made of plastic, and the tips thereof are tapered so that the ribs 33 can easily bite into the filter member 31. Is desirable.

Next, the operation of the present embodiment will be described.

When the blower 7 is driven, as shown in FIG. 1, the air taken in from the air suction port 12 passes through the pre-filter 13, the filter 17, and the heat exchanger 5 and is subjected to heat exchange. Is blown out from the outlet 15.

When the air taken in from the air suction port 12 passes through the pre-filter 13, first, relatively large dirt and dust are captured and removed.

Subsequently, the filter 17 passes through a filter 17. In the filter 17, fine dust and dust are removed by a charging filter 29, and odors in the air are further removed by a deodorizing filter 27, thereby purifying indoor air. You.

In short, according to this embodiment, the upper frame 21
A plurality of ribs 33 projecting toward the filter member 31 are provided on the inner surfaces of both ends of the lower frame 23, and the ribs 33 are cut into both end portions of the filter member 31. The filter member 31 is firmly supported between the frame member 23 and the filter member 31 is not displaced within the frame body 19 even when an impact is applied to the frame as shown by an arrow in FIG.

Although the present invention has been described based on one embodiment, the present invention is not limited to the above-described embodiment. For example, the rib 33 may be provided on only one of the inner surfaces of the upper frame 21 and the lower frame 23, or the rib 33
May be provided at least at both ends of the upper frame 21 and the lower frame 23, and may not be provided at the center. Thus, various modifications can be made without departing from the spirit of the present invention.

[0024]

As is apparent from the above description, according to the present invention, the ribs for pressing both end portions of the filter member are provided on the inner surfaces of both ends of the upper frame and / or the lower frame. Since both end portions are firmly supported between the upper frame and the lower frame, even if an impact is applied to the frame body, the filter member does not shift within the frame body.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an air conditioner to which the air filter of FIG. 2 is applied.

FIG. 2 is a perspective view showing an embodiment of the air filter according to the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is a perspective view showing a conventional air filter.

FIG. 5 is a plan view of the same.

[Explanation of symbols]

 13 Pre-filter 17 Filter 19 Frame 21 Filter support 25 Filter fitting part 27 Filter member 29 Charging filter 31 Filter member 33 Rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 5-18656 (JP, U) JP-A 61-10430 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 371

Claims (1)

(57) [Claims] 1. An air conditioner is mounted between a pre-filter and a heat exchanger, has an upper frame and a lower frame, and a deodorizing filter and a honeycomb-type charging filter are overlapped between the two frames.
It across the filter member configured Te Align to both ends inner surface of the upper frame and / or the lower frame, the both end portions of the filter member
An air filter , wherein a rib for biting and holding the filter member is provided.